20 Dec.08 ; Recent problem - last few days. I have COMODO Internet Security. Their Virus Signature database is not up to date. When attempting to update it, a message says "Antivirus Engine not Initialised". Cannot run a scan for this reason. The AV system is useless. Virus database was updated automatically on 20 Dec.08, but it makes no difference. Many other users have complained about this fault. IT IS A COMODO PROBLEM and they need to sort it out quickly. Meanwhile, we will all wait until they have a nice long Christmas break and perhaps sometime in the new year, they just may get around to correcting this matter, so that customers can use the AV part of COMODO and not just the Firewall. UPDATE ------- Firstly I apologise for the gibe. It was not meant seriously, just an innocent gibe. The COMODO people deserve a medal. The system is superb in design and operation, as a technical man, it is remarkable and to be offered free is astounding. I cannot express my compliments and gratitude highly enough to this company and it`s brilliant staff. WELL - I finally uninstalled the whole thing and re-installed it from the COMODO site. The AV now works perfectly as before, but the only downside is that I lost all my personal security entries for an awful lot of files and programs. I have just had to start this enormous task again of going through the entire listing for the Firewall and Defense. It is VERY laborious and time consuming. I gather that I should have just dealt with the AV part, but did not know how to select that alone, so did the complete uninstall/re-install. Many thanks to the kind people who replied to my poster.